scsi: sd: remove unused sd_probe_types
Attend the following warning introduced by a downstream change:
drivers/scsi/sd.c:121:20: error: ‘sd_probe_types’ defined but not used [-Werror=unused-variable]
121 | static const char *sd_probe_types[] = { "async", "sync" };
| ^~~~~~~~~~~~~~
Fixes: bc573390 ("scsi: sd: Add "probe_type" module parameter to allow synchronous probing")
Signed-off-by: Eric Chanudet echanude@redhat.com